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Is learning openings that important and how can I create my own opening repertoire

@mrbasso said in #7:
> At your rating an opening repertoire is a waste of time. Better learn the strategical ideas of the openings you play!
"... To play chess competitively, you need to develop an opening repertoire. ..." - Learn to Play Chess Like a Boss (2019) by GM Patrick Wolff
@chesstricksandtraps said in #1:
I did an experiment here on lichess. On 1 account I played 1000 games with my repertoire and on another account I played again 1000 games with openings which I don't know anything about it. The difference was 100 ratingpoints. Also by just playing I was able to get better in an unknown openings especially with black.

See my article published end of last year : schaken-brabo.blogspot.com/2023/11/schaakopeningen-studeren-deel-6.html

Is 100 ratingpoints worth hundreds of hour of study openings? Be careful that you don't lose your joy for chess !
@kindaspongey said in #23:
> "... To play chess competitively, you need to develop an opening repertoire. ..." - Learn to Play Chess Like a Boss (2019) by GM Patrick Wolff
Agreed!
@mvhk
Thanks a lot for providing an experimental analysis!
In my opinion it depends on different people and their different scenarios if they want to make an opening repertoire or not. In my situation I want to make an opening repertoire to improve my chess. Yes, that may mean that I might miss out on some joys of chess but I believe in these lines - "To Become Different, Do Things Differently!"
@mvhk said in #24:
> I did an experiment here on lichess. On 1 account I played 1000 games with my repertoire and on another account I played again 1000 games with openings which I don't know anything about it. The difference was 100 ratingpoints.
Out of curiosity: what time control were those games? I suspect that the shorter time control, the bigger would be the difference, especially in the initial phase when the "unknown" repertoire is most unfamiliar.
@mkubecek said in #27:
> Out of curiosity: what time control were those games? I suspect that the shorter time control, the bigger would be the difference, especially in the initial phase when the "unknown" repertoire is most unfamiliar.

2 minutes + 1 second.

Yes slower timecontrols probably would give less gain by learning openings. I think such experiment based on thousands of games is not possible with a slow timecontrol. It took me already now 6 months.
@chesstricksandtraps said in #29:
> Wow! 6 months is a lot of time to dedicate on just an experiment.
I enjoyed it so it was not a burden. Besides now people think that I know much more openings than I really know. That can be an advantage too.